Warm and Comfortable
The Q-Core SL is a light weight, warm, and comfortable. When looking for a new pad I compared this to the Therm-a-Rest NeoAir XLite. This pad felt more comfortable, probably attributed to it being an inch thicker. I like to winter camp so warmth was a big factor in my decision and this hasn't disappointed. The pad claims to be a three season pad, but it performs well on snow and keeps me warm.
The downsides I have noticed are that it feels narrow. I'm 5'11, 185 lbs and my shoulders are a little wider than the pad is, so if you sleep on your back, your arms might get cold. I'm a side sleeper usually, and since the pad is thick enough I haven't had that issue. Also, if you've had a tough day the pad might be a bit of a pain to inflate since usually takes about 2-3 minutes of lung effort as it is not auto-inflating.